Michael Stapelberg 8878926ea7 internal/impl: fix WhichOneof() to work with synthetic oneofs ... This is the equivalent of CL 638495, but for the Opaque API. While the behavior is the same for non-synthetic oneofs between the Open Struct API and Opaque API, the behavior for synthetic oneofs is not the same: Because the Opaque API uses a bitfield to store presence, we need to use the Opaque presence check in WhichOneof(). This CL extends the testproto generator to use the protoc command-line flag for the test3 testproto (which specifies syntax = "proto3";), as the in-file api_level is only available in .proto files using editions (but editions does not use synthetic oneofs for optional fields, only proto3 does). For golang/protobuf#1659 Change-Id: I0a1fd6e5fc6f96eeab043f966728ce2a14dbd446 Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/638515 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Chressie Himpel <chressie@google.com>		2024-12-23 05:33:29 -08:00
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main.go	internal/impl: fix WhichOneof() to work with synthetic oneofs	2024-12-23 05:33:29 -08:00